.infoBox {
  background-color: #f3fbfd;
}
.infoBox .size-mask {
  position: fixed;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 51;
  display: none;
}
.infoBox .size-mask .size-box {
  background: #fff;
  position: absolute;
  left: 0;
  bottom: 0;
}
